ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,543,911, issued on Feb. 10, was assigned to SHENZHEN SILVER STAR INTELLIGENT GROUP Co. LTD (Shenzhen, China).
"Sewage storage tank and cleaning robot" was invented by Jiancong Zhao (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sewage storage tank, including: a tank body and a barrier. The tank body defines therein a suction port and an intake port. The suction port is configured to communicate with a suction fan arranged outside the sewage storage tank, to enable the suction fan to suction air from the tank body via the suction port and to generate a negative pressure at the intake port, such that sewage outside the tank body is suct...